Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A light-emitting device configured to emit light in a frame which is split into a first field and a second field, the light-emitting device comprising: a scan line extending in a row direction; a first data line extending in a column direction; a second data line extending in the column direction; a first pixel circuit electrically connected to the scan line and the first data line; a second pixel circuit electrically connected to the scan line and the second data line; a first light-emitting diode (LED) and a second LED, configured to be driven by the first pixel circuit; and a third LED and a fourth LED, configured to be driven by the second pixel circuit; wherein the first LED and the fourth LED are arranged in different rows and driven by the first pixel circuit and the second pixel circuit respectively in the first field, and the second LED and the third LED are arranged in different rows and driven by the first pixel circuit and the second pixel circuit respectively in the second field.
This invention relates to a light-emitting device designed to emit light in a frame divided into two fields, addressing challenges in display technology where efficient pixel control and high-resolution imaging are required. The device includes a scan line extending horizontally and two data lines extending vertically. Two pixel circuits are connected to the scan line, with the first pixel circuit linked to the first data line and the second pixel circuit linked to the second data line. Each pixel circuit drives two LEDs, resulting in four LEDs per pair of pixel circuits. The first and fourth LEDs are positioned in different rows and are driven by the first and second pixel circuits, respectively, during the first field of the frame. Similarly, the second and third LEDs, also in different rows, are driven by the first and second pixel circuits, respectively, during the second field. This arrangement allows for interleaved driving of LEDs in alternating fields, enabling higher effective resolution and improved display performance without increasing the number of pixel circuits or data lines. The design optimizes power efficiency and reduces complexity while enhancing image quality.
2. The light-emitting device of claim 1 , further comprising a first switch coupled between the first LED and the first pixel circuit and a fourth switch coupled between the fourth LED and the second pixel circuit.
A light-emitting device includes multiple light-emitting diodes (LEDs) and pixel circuits to control the LEDs. The device addresses the challenge of efficiently driving multiple LEDs with precise control, particularly in display or lighting applications where independent modulation of different LEDs is required. The device includes at least four LEDs, with a first LED connected to a first pixel circuit and a fourth LED connected to a second pixel circuit. To enhance control and reduce interference, a first switch is coupled between the first LED and the first pixel circuit, and a fourth switch is coupled between the fourth LED and the second pixel circuit. These switches allow selective activation or deactivation of the LEDs, enabling independent control of each LED's emission. The pixel circuits provide the necessary driving signals to the LEDs, while the switches ensure proper isolation and switching functionality. This configuration improves the device's flexibility and performance, allowing for dynamic adjustments in light output without cross-talk between different LED channels. The overall design is suitable for applications requiring high-resolution displays, adaptive lighting systems, or other scenarios where precise LED control is essential.
3. The light-emitting device of claim 2 , further comprising a first emission control line configured to control the first switch and the fourth switch.
A light-emitting device includes a pixel circuit with multiple transistors and a light-emitting element. The device addresses the challenge of efficiently controlling light emission in display panels, particularly in organic light-emitting diode (OLED) displays, by integrating multiple switches to manage current flow and emission stability. The pixel circuit comprises a first switch, a second switch, a third switch, and a fourth switch, along with a driving transistor and a storage capacitor. The first switch is connected to a data line and a first node, while the second switch connects the first node to a reference voltage. The third switch links the first node to a second node, and the fourth switch connects the second node to the driving transistor. The driving transistor controls current flow to the light-emitting element based on the voltage stored in the storage capacitor. A first emission control line is added to simultaneously control the first and fourth switches, ensuring synchronized operation to regulate light emission. This design improves power efficiency and display uniformity by precisely managing the timing and magnitude of current supplied to the light-emitting element. The device is particularly useful in high-resolution displays requiring stable and efficient pixel control.
4. The light-emitting device of claim 3 , wherein the first emission control line carries a first emission control signal to turn on the first switch and the fourth switch in the first field.
A light-emitting device includes a pixel circuit with multiple switches and emission control lines to regulate light emission. The device addresses the challenge of controlling light emission in display panels, particularly in active matrix organic light-emitting diode (AMOLED) displays, where precise timing and signal distribution are critical for uniform brightness and efficiency. The pixel circuit comprises a first switch, a second switch, a third switch, and a fourth switch, along with a first emission control line and a second emission control line. The first emission control line carries a first emission control signal to activate the first and fourth switches in a first field, enabling current flow through a light-emitting element. The second emission control line carries a second emission control signal to activate the second and third switches in a second field, allowing data voltage storage and compensation. The switches are arranged to ensure proper timing of emission and data programming, preventing cross-talk and improving display performance. The device may also include a driving transistor and a storage capacitor to maintain stable current during emission. This configuration enhances display uniformity and reduces power consumption by precisely controlling emission timing and current flow.
5. The light-emitting device of claim 4 , wherein the first emission control signal has a first duty cycle generated according to desired brightness of the first LED and the fourth LED.
A light-emitting device includes a first LED and a second LED connected in series, and a third LED and a fourth LED connected in series. The device also includes a first switch connected to the first and second LEDs and a second switch connected to the third and fourth LEDs. A control circuit generates a first emission control signal and a second emission control signal to control the first and second switches, respectively. The first emission control signal has a first duty cycle determined based on the desired brightness of the first and fourth LEDs. The second emission control signal has a second duty cycle determined based on the desired brightness of the second and third LEDs. The control circuit adjusts the duty cycles of the emission control signals to regulate the brightness of the LEDs. The device may also include a current source to supply current to the LEDs and a voltage regulator to maintain a stable voltage for the control circuit. The LEDs are arranged in a configuration where the first and second LEDs are connected in series, and the third and fourth LEDs are connected in series, allowing independent brightness control of each pair. The control circuit ensures that the LEDs operate within safe voltage and current limits while achieving the desired brightness levels. This design enables precise brightness control for multiple LEDs in a compact and efficient manner.
6. The light-emitting device of claim 2 , further comprising a second switch coupled between the second LED and the first pixel circuit and a third switch coupled between the third LED and the second pixel circuit.
A light-emitting device includes multiple light-emitting diodes (LEDs) and pixel circuits for controlling the LEDs. The device addresses the challenge of efficiently managing power and signal distribution in display or lighting systems where multiple LEDs must be independently controlled. The device includes at least a first LED, a second LED, and a third LED, each coupled to respective pixel circuits that regulate current flow to the LEDs. The second LED is connected to a first pixel circuit via a second switch, and the third LED is connected to a second pixel circuit via a third switch. These switches enable selective activation or deactivation of the LEDs, allowing for dynamic control of light output. The pixel circuits provide precise current regulation to ensure consistent brightness and color accuracy. The switches improve efficiency by reducing unnecessary power consumption when certain LEDs are not in use. This configuration is particularly useful in high-resolution displays, adaptive lighting systems, or other applications requiring precise and flexible LED control. The device ensures reliable operation while minimizing power loss and signal interference.
7. The light-emitting device of claim 6 , wherein the first switch, the second switch, the third switch and the fourth switch are P-type transistors or N-type transistors.
This invention relates to a light-emitting device, specifically an LED (Light Emitting Diode) driver circuit designed to improve efficiency and control. The device addresses the problem of power loss and inconsistent brightness in traditional LED drivers, which often rely on inefficient switching mechanisms. The invention introduces a driver circuit with four switches—first, second, third, and fourth—that regulate current flow to the LED. These switches can be configured as either P-type or N-type transistors, allowing flexibility in circuit design. The switches work in conjunction with a control circuit that adjusts the duty cycle of the current to maintain stable LED brightness while minimizing power dissipation. The use of transistors ensures fast switching, reducing energy loss and improving overall efficiency. The invention also includes a feedback mechanism to dynamically adjust the current based on LED performance, ensuring consistent light output. By optimizing the switching behavior and transistor types, the device enhances energy efficiency and reliability in LED lighting applications.
8. The light-emitting device of claim 6 , further comprising a second emission control line configured to control the second switch and the third switch.
A light-emitting device includes a pixel circuit with a driving transistor, a first switch, a second switch, and a third switch. The driving transistor supplies current to a light-emitting element based on a data signal. The first switch controls the flow of the data signal to the driving transistor. The second and third switches are connected to a reference voltage line and a power supply line, respectively, to initialize and stabilize the driving transistor's operation. The device also includes a first emission control line that controls the second and third switches to regulate current flow during emission phases. Additionally, a second emission control line is provided to further control the second and third switches, allowing for more precise timing and current management. This configuration improves the stability and efficiency of the light-emitting device by ensuring accurate current delivery to the light-emitting element, reducing power consumption and enhancing display performance. The second emission control line enables finer control over the switching operations, optimizing the device's response to varying display conditions.
9. The light-emitting device of claim 8 , wherein the second emission control line carries a second emission control signal to turn on the second switch and the third switch in the second field.
A light-emitting device is designed to control light emission in a display panel, particularly in a pixel circuit with multiple sub-pixels. The device addresses the challenge of independently controlling light emission in different sub-pixels to improve display performance and efficiency. The device includes a first emission control line that carries a first emission control signal to turn on a first switch in a first field, allowing current to flow through a first light-emitting element. Additionally, a second emission control line carries a second emission control signal to turn on a second switch and a third switch in a second field, enabling current to flow through a second light-emitting element. The switches are transistors that regulate the current flow to the light-emitting elements, which are typically organic light-emitting diodes (OLEDs). The emission control signals are synchronized with the timing of the display panel to ensure precise control over light emission in each sub-pixel. This design allows for independent control of light emission in different sub-pixels, improving color accuracy and reducing power consumption. The device is particularly useful in high-resolution displays where precise control of light emission is critical.
10. The light-emitting device of claim 9 , wherein the second emission control signal has a second duty cycle generated according to desired brightness of the second LED and the third LED.
The invention relates to a light-emitting device with multiple LEDs and a control system for adjusting their brightness. The device includes at least two LEDs, such as a first LED and a second LED, and a control circuit that generates emission control signals to regulate their light output. The control circuit produces a first emission control signal with a first duty cycle to control the brightness of the first LED. Additionally, it generates a second emission control signal with a second duty cycle, which is determined based on the desired brightness levels of a second LED and a third LED. The second emission control signal may be used to control the brightness of the second LED, while the third LED's brightness is adjusted independently or in conjunction with the second LED. The control circuit ensures that the duty cycles of the emission signals are optimized to achieve the desired brightness levels for each LED, allowing for precise and efficient light output control. This system is particularly useful in applications requiring dynamic brightness adjustments, such as displays, lighting systems, or optical communication devices.
11. The light-emitting device of claim 6 , further comprising an emission control line configured to control the first switch, the second switch, the third switch, and the fourth switch.
A light-emitting device includes a pixel circuit with multiple switches and a light-emitting element. The device controls light emission by selectively activating these switches to manage current flow to the light-emitting element. The pixel circuit includes a first switch connected to a data line for receiving a data signal, a second switch connected to a reference voltage line, a third switch connected to a driving transistor, and a fourth switch connected to the light-emitting element. The driving transistor generates a driving current based on the data signal and a reference voltage. The emission control line independently controls the first, second, third, and fourth switches to regulate the timing and duration of light emission. This design allows precise control over the light-emitting element's operation, improving display performance by ensuring accurate current flow and reducing power consumption. The emission control line enables synchronized switching of all switches, enhancing efficiency and reliability in display applications.
12. The light-emitting device of claim 11 , wherein a type of transistors used in two ones of the first switch, the second switch, the third switch, and the fourth switch is different from a type of transistors used in other two ones of the first switch, the second switch, the third switch, and the fourth switch.
This invention relates to a light-emitting device with improved switching circuitry for controlling light emission. The device addresses the problem of inefficiency and complexity in traditional light-emitting circuits, particularly in applications requiring precise control of light output. The invention features a switching mechanism comprising four switches—first, second, third, and fourth switches—that regulate the flow of current to a light-emitting element. The switches are configured to selectively activate or deactivate the light-emitting element based on input signals, ensuring controlled light emission. A key aspect of the invention is the use of different transistor types for the switches. Specifically, two of the four switches (e.g., first and second) employ one type of transistor, while the remaining two switches (e.g., third and fourth) use a different transistor type. This mixed-transistor approach optimizes performance by leveraging the strengths of each transistor type—such as speed, power efficiency, or voltage handling—where needed. For example, one transistor type may be chosen for high-speed switching, while another may be selected for low-power operation. This design enhances overall efficiency, reduces power consumption, and improves reliability in the light-emitting device. The invention is particularly useful in applications requiring dynamic light control, such as displays, indicators, or lighting systems.
13. The light-emitting device of claim 12 , wherein the first switch and the fourth switch include P-type transistors, and the second switch and the third switch include N-type transistors.
This invention relates to a light-emitting device, specifically an organic light-emitting diode (OLED) driver circuit designed to improve efficiency and reduce power consumption. The device addresses the problem of energy loss and inefficiency in conventional OLED driver circuits, particularly in display applications where multiple OLEDs are driven by a shared power supply. The light-emitting device includes a first switch, a second switch, a third switch, and a fourth switch, each controlling the flow of current to an OLED element. The first and fourth switches are P-type transistors, while the second and third switches are N-type transistors. The P-type transistors are configured to conduct current when a gate voltage is low, while the N-type transistors conduct when a gate voltage is high. This complementary arrangement ensures efficient current control, minimizing power dissipation during switching transitions. The circuit also includes a current source to provide a stable driving current to the OLED, and a capacitor to store charge and maintain voltage levels during operation. The combination of P-type and N-type transistors allows for bidirectional current flow, improving response time and reducing energy loss. The device is particularly useful in display panels where precise and efficient OLED control is required.
14. The light-emitting device of claim 12 , wherein the first switch and the third switch include P-type transistors, and the second switch and the fourth switch include N-type transistors.
This invention relates to a light-emitting device, specifically a circuit configuration for driving light-emitting elements such as LEDs. The device addresses the challenge of efficiently controlling current flow through light-emitting elements to achieve stable and precise light output. The circuit includes a first switch and a third switch, both implemented as P-type transistors, and a second switch and a fourth switch, both implemented as N-type transistors. These switches are arranged to regulate current flow through the light-emitting elements, ensuring proper activation and deactivation of the light-emitting elements based on input signals. The P-type transistors handle current flow in one direction, while the N-type transistors handle current flow in the opposite direction, allowing for bidirectional current control. This configuration enables efficient switching and reduces power loss, improving the overall performance and reliability of the light-emitting device. The use of complementary transistor types ensures that the circuit can handle both positive and negative voltage swings, making it suitable for various lighting applications. The invention provides a robust and energy-efficient solution for controlling light-emitting elements in electronic devices.
15. The light-emitting device of claim 1 , wherein at least one of the first LED, the second LED, the third LED, and the fourth LED is an inorganic light-emitting diode or a micro LED.
The invention relates to a light-emitting device designed to improve efficiency and performance in lighting applications. The device includes a plurality of light-emitting diodes (LEDs) arranged to emit light in different directions or wavelengths. Specifically, the device comprises at least a first LED, a second LED, a third LED, and a fourth LED, each configured to emit light in a distinct direction or color. The arrangement allows for enhanced light distribution, color mixing, or directional control, addressing challenges in conventional LED lighting systems where uniformity and efficiency are compromised. A key aspect of the invention is that at least one of the LEDs in the device is either an inorganic LED or a micro LED. Inorganic LEDs, typically made from materials like gallium nitride or gallium arsenide, offer high brightness and reliability, while micro LEDs are miniature LEDs that provide superior energy efficiency and faster response times. By incorporating these advanced LED types, the device achieves improved performance in terms of brightness, color accuracy, and power consumption. This innovation is particularly beneficial in applications requiring precise light control, such as displays, automotive lighting, or specialized illumination systems. The use of inorganic or micro LEDs also enables the device to operate at higher temperatures and under demanding conditions, extending its lifespan and reliability.
16. The light-emitting device of claim 1 , wherein at least one of the first LED, the second LED, the third LED, and the fourth LED is an organic light-emitting diode.
This invention relates to a light-emitting device designed to improve color rendering and efficiency in lighting applications. The device includes a plurality of light-emitting diodes (LEDs) arranged to emit light in different spectral regions, addressing the problem of limited color accuracy and energy efficiency in conventional lighting systems. Specifically, the device comprises at least four LEDs: a first LED emitting light in a first spectral region, a second LED emitting light in a second spectral region, a third LED emitting light in a third spectral region, and a fourth LED emitting light in a fourth spectral region. The spectral regions are distinct, allowing the device to produce a wide range of colors and improve color rendering. The LEDs may be organic light-emitting diodes (OLEDs), which offer advantages such as flexibility, high color purity, and lower power consumption compared to traditional inorganic LEDs. The device may also include a control system to adjust the intensity of each LED independently, enabling dynamic color tuning and enhanced lighting performance. This configuration ensures better color reproduction and energy efficiency, making the device suitable for applications requiring high-quality illumination, such as displays, automotive lighting, and general lighting.
17. The light-emitting device of claim 1 , wherein at least one of the first LED, the second LED, the third LED, and the fourth LED can emit lights of multiple colors.
The LED light can produce multiple colors by having at least one of its individual red, green, blue, or white LEDs capable of emitting different colors.
18. The light-emitting device of claim 1 , wherein at least one of the first LED, the second LED, the third LED, and the fourth LED can emit blue light.
This invention relates to a light-emitting device designed to address limitations in conventional lighting systems, particularly in achieving precise color control and energy efficiency. The device comprises a plurality of light-emitting diodes (LEDs) arranged to emit light in different spectral ranges, enabling tunable color output. Specifically, the device includes at least four LEDs: a first LED, a second LED, a third LED, and a fourth LED. Each LED emits light at distinct wavelengths, allowing the device to generate a wide gamut of colors by combining the outputs. At least one of these LEDs is capable of emitting blue light, which is critical for achieving high color rendering and brightness. The device may also incorporate additional LEDs or optical elements to enhance performance. The arrangement and selection of LEDs ensure that the device can produce light with adjustable color temperature and spectral distribution, making it suitable for applications requiring precise color control, such as displays, medical lighting, or horticultural lighting. The inclusion of a blue-emitting LED ensures that the device can cover the blue spectrum, which is essential for applications requiring high color fidelity. The overall design optimizes energy efficiency while maintaining flexibility in color output.
19. The light-emitting device of claim 1 , wherein: the first pixel circuit comprises: a first transistor having a first terminal electrically connected to the first data line, a second terminal and a control terminal electrically connected to the scan line; a second transistor having a first terminal electrically connected to a supply voltage, a second terminal electrically connected to the first LED and the second LED, and a control terminal electrically connected to the second terminal of the first transistor; and a first capacitor, coupled to the first terminal of the second transistor and the control terminal of the second transistor.
This invention relates to a light-emitting device with an improved pixel circuit design for driving multiple LEDs. The device addresses the challenge of efficiently controlling light emission from multiple LEDs in a pixel while minimizing power consumption and circuit complexity. The pixel circuit includes a first transistor connected between a data line and a scan line, where the data line provides input signals and the scan line controls the transistor's operation. A second transistor is connected between a supply voltage and two LEDs, with its control terminal linked to the output of the first transistor. This configuration allows the second transistor to regulate current flow to the LEDs based on the input data signal. A capacitor is coupled between the supply voltage and the control terminal of the second transistor to stabilize the voltage and maintain consistent LED brightness. The circuit ensures precise control over the LEDs' emission while reducing power loss and simplifying the overall design. This approach is particularly useful in display technologies requiring high efficiency and reliable performance.
20. The light-emitting device of claim 19 , wherein the first transistor, the second transistor are P-type transistors or N-type transistors.
This invention relates to a light-emitting device, specifically addressing the need for improved transistor configurations in such devices to enhance performance and reliability. The device includes a first transistor and a second transistor, each of which can be either P-type or N-type transistors. These transistors are used to control the operation of the light-emitting element, ensuring efficient current flow and stable light emission. The flexibility in transistor type selection allows for optimization based on specific application requirements, such as power efficiency, switching speed, or cost. The device may also include additional components like a light-emitting element, a capacitor, and a control circuit, all working together to regulate the light output. The ability to choose between P-type and N-type transistors provides designers with greater flexibility in circuit design, enabling better adaptation to different operating conditions and performance demands. This configuration helps improve the overall efficiency and reliability of the light-emitting device, making it suitable for various applications, including displays, lighting systems, and other optoelectronic devices.
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October 13, 2020
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